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GPT-6.1 Sol vs Seed 2.0 Pro pricing

Prices

GPT-6.1 Sol and Seed 2.0 Pro prices, USD per 1M tokens
USD per 1M tokensGPT-6.1 SolSeed 2.0 Pro
Input$2.00$0.50
Output$10.00$3.00
Cache read$0.10$0.10
Cache write$2.50Not published
Batch input$1.00$0.25
Batch output$5.00$1.50

Verified against the provider's official pricing page on Oct 9, 2026. Official pricing page

Monthly cost by workload

WorkloadGPT-6.1 SolSeed 2.0 Pro
Chatbot1,000 in / 500 out tokens, 10,000 requests a day$2,100/mo$600.00/mo
RAG8,000 in / 500 out tokens, 5,000 requests a day$3,150/mo$825.00/mo
Coding agent50,000 in / 2,000 out tokens, 1,000 requests a day, 80% cached input$1,320/mo$450.00/mo

Cost = input tokens × input price + output tokens × output price, 30 days a month. Cached input uses the cache read price. Cache write fees are not included.

Context and capabilities

GPT-6.1 SolSeed 2.0 Pro
Context1,050,000 tokens256,000 tokens
Max output128,000 tokens128,000 tokens
Inputtext, image, pdftext, image, video
Tool callingYesYes
ReasoningYesYes
Structured outputsYesNo

Questions

What is the price difference between GPT-6.1 Sol and Seed 2.0 Pro?
GPT-6.1 Sol: $2.00 per 1M input tokens and $10.00 per 1M output tokens. Seed 2.0 Pro: $0.50 per 1M input tokens and $3.00 per 1M output tokens. For the Chatbot workload (1,000 in / 500 out tokens, 10,000 requests a day), that is about $2,100 per month for GPT-6.1 Sol and $600.00 for Seed 2.0 Pro.
Which has the longer context window, GPT-6.1 Sol or Seed 2.0 Pro?
GPT-6.1 Sol has the longer context window: up to 1,050,000 tokens, compared with 256,000 for Seed 2.0 Pro.
Do GPT-6.1 Sol and Seed 2.0 Pro have prompt caching and batch prices?
GPT-6.1 Sol: cached input $0.10 per 1M tokens; batch $1.00 per 1M input tokens and $5.00 per 1M output tokens. Seed 2.0 Pro: cached input $0.10 per 1M tokens; batch $0.25 per 1M input tokens and $1.50 per 1M output tokens.

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